I added that the question does not duplicate this question in the "Editing" section, please view ..
We use the letterSpacing attribute in EditText to determine the spacing between letters, for example
.
But according to the documentation , it was only introduced at API level 21 or higher, if we try to use it in a lower version of the API level, It shows the rendering problem directly, as in this figure
.
Are there alternatives to letterSpacing for use in EditText up to API level 20?
Edit
It was marked as duplicated, but I want to prove that the android:textScaleX and android:letterSpacing really different.
Take an example of adding these two attributes to an EditText
The result of adding android:letterSpacing is

And the result of adding android:textScaleX is 
source share